PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/18-20:42:40
G10     292.8          49.8               11.3 +/-    0.69      14.3 +/-    0.69  0.060 / 0.080
G14     209.5          10.6               -3.9 +/-   27.76     -10.8 +/-   27.76  0.060 / 0.100
G15     46.5           30.2               10.3 +/-    1.00      17.9 +/-    1.00  0.090 / 0.250
G18     353.8          66.4               10.8 +/-    0.54      11.6 +/-    0.54  0.070 / 0.300
G20     69.4           20.2               11.8 +/-    0.88      25.9 +/-    0.88  0.040 / 0.050
G21     93.1           73.3               11.9 +/-    1.17      12.4 +/-    1.17  0.040 / 0.050
G24     101.8          25.4               13.2 +/-    0.68      25.5 +/-    0.68  0.070 / 0.120
G27     301.7          34.0               11.7 +/-    0.96      18.9 +/-    0.96  0.070 / 0.140
G32     210.4          26.7               12.8 +/-    0.76      24.1 +/-    0.76  0.320 / 0.690